What is true about coolant flowing from a low-flow radiator?

Coolant flowing from a low-flow radiator has been pumped more slowly and is cooler because of the inherent design and operating characteristics of low-flow systems. In low-flow radiators, the coolant circulates at a reduced rate, allowing for longer contact time with the radiator surfaces. This extended period permits better heat dissipation as the coolant interacts more with the radiator's cooling fins, enabling it to cool more effectively before returning to the engine.

In contrast, high-flow radiators push coolant rapidly through the system, which may not allow sufficient time for heat exchange, resulting in warmer coolant returning to the engine. Therefore, the characteristic of low-flow systems yielding cooler coolant is a crucial aspect of their function, making this option accurate.